On the other hand, from a story perspective, a logical 'expansion pack' of story for the Inquisitor, after Act III, would presumably be following the next step on the career path... i.e. packing the Emperor off to a nice retirement home by the sea with a good view of the River Styx.

The Inquisitor possibly has more *opportunity* to be neutral and Revanite, since the Warrior's always expected to be following orders. My Inquisitor betrayed the Revanites for that very reason- she felt they were right, but that she could make better use of their teachings if they were no longer alive. Of course, that was before she got totally rotten or, latterly, stark raving mad....